"Great game...but you might have to buy more peripherals"
If you love the Beatles music, then you'll love this game.
Please be aware that if you buy this game for the vocal harmonies, you will need a USB microphone for each singer (assuming you want to harmonise locally and not online) - it does NOT support the Xbox headset as a microphone. I've ordered the MadCatz one listed on Amazon.
Also, if you want three microphones plugged in you'll either have to plug one in the back of the Xbox (not an option for me as I have the Wireless Network Adaptor plugged in) or use a USB hub. If you bought rock band (band in a box) in the past then you should have a little USB hub. Otherwise you'll have to get hold of a USB hub (apparently any one will work, but it most likely would need to be a powered one).